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Actors Ty Burrell and Julie Bowen of "Modern Family" arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singers Jason Derulo and Jordin Sparks arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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From left, Nathan Sykes, Jay McGuiness, Siva Kaneswaran, Tom Parker and Max George of The Wanted arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Jordin Sparks arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Jordin Sparks poses in the press room at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Kerli arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Kelly Rowland arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Taio Cruz arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Nelly Furtado arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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NHL hockey player Mike Fisher and singer Carrie Underwood arrive at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Miley Cyrus arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Miley Cyrus arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Taylor Swift arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Musician Kris Kristofferson arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Justin Bieber arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Model Amber Rose arrives at the 2012 Billboard Music Awards held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Rapper Wiz Khalifa, winner of the award for Top New Artist, poses in the press room at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Lisa Marie Presley arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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TV personality "Downtown" Julie Brown arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Actress Julianne Hough arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Katy Perry arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Katy Perry and her grandmother arrive at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Stevie Wonder poses in the press room at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Musician Chester Bennington of Linkin Park arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Eric Benet arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Robin Thicke arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Joey Fatone arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Alicia Keys arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Rapper Swizz Beatz and singer Alicia Keys arrive at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Gavin Degraw arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Model Chrissy Teigen and musician John Legend arrive at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Usher arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Natasha Bedingfield poses in the press room at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Natasha Bedingfield arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Actress Zooey Deschanel arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singer Gladys Knight arrives at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Caroline Bryan and singer Luke Bryan arrive at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Singers Monica and Chris Brown arrive at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.

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Redfoo and Sky Blu of LMFAO, winners of the Hot 100 Song of the Year award, pose in the press room at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena on May 20, 2012, in Las Vegas.